20040330 has 64 divisors (see below), whose sum is σ = 50139648. Its totient is φ = 5122560.

The previous prime is 20040329. The next prime is 20040359. The reversal of 20040330 is 3304002.

It is a super-2 number, since 2×20040330² = 803229653017800, which contains 22 as substring.

It is a zygodrome in base 7.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85894 + ... + 86126.

It is an arithmetic number, because the mean of its divisors is an integer number (783432).

Almost surely, 2^20040330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20040330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25069824).

20040330 is an abundant number, since it is smaller than the sum of its proper divisors (30099318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20040330 is a wasteful number, since it uses less digits than its factorization.

20040330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 20040330 is about 4476.6427152499. The cubic root of 20040330 is about 271.6240932613.

Adding to 20040330 its reverse (3304002), we get a palindrome (23344332).

The spelling of 20040330 in words is "twenty million, forty thousand, three hundred thirty".